Monorail car

ABSTRACT

One end of a running direction of a bogie, two guiding wheels are arranged, another end of the running direction of the bogie, two stabilizing wheels are arranged. The stabilizing wheel is positioned in a lower portion of the guiding wheel. The stabilizing wheel has a function for guiding the bogie along to the monorail and a function for presenting a falling of the bogie. A total number of the guiding wheels and the stabilizing wheels can be lessened, in particularly a number of the guiding wheels can be lessened, and accordingly the bogie can be manufactured with a low cost. A traction link for connecting the bogie and the car body is arranged on one end of the bogie, and accordingly a length of the bogie can be shortened.

BACKGROUND OF THE INVENTION

[0001] 1. <Technical Field>

[0002] The present invention relates to a monorail car and in particularly to a bogie of a monorail car.

[0003] 2. <Prior Art>

[0004] In a conventional monorail car, as shown in Japanese application patent publication No. Sho 62-12067, in the monorail car, two bogies support one car body. Further, the bogie is comprised of running wheels for running on an upper face of the monorail, four guiding wheels for running on both side faces of the monorail, and two stabilizing wheels for running on both side faces of the monorail. The stabilizing wheels are arranged at a lower portion of the guiding wheels and the stabilizing wheels prevent a falling of the car body.

[0005] In the above stated conventional monorail car, using the two bogies, since one car body is supported, the monorail car is difficult to run on a curvature having a small radius. Further, when the monorail car runs on the curvature having the small radius, to an air spring member (an air cushion member), which is provided on between the bogie and the car body, since a torsion is given, accordingly a life of the air spring member becomes short.

[0006] Further, since the monorail car has many wheels for rolling on the side faces of the monorail, as a result the monorail car becomes a high cost.

SUMMARY OF THE INVENTION

[0007] An object of the present invention is to provide a monorail car wherein a bogie of the monorail car having a low cost can be provided.

[0008] The above stated object of the present invention can be attained by forming two guiding wheels and two stabilizing wheels respectively, and a number of the guiding wheels and a number of the stabilizing wheels are the above stated two at a maximum, respectively.

[0009] According to the present invention, in a monorail car having a bogie for running on a monorail and a car body supported by the bogie, the bogie has running wheels for rolling on an upper face on the monorail, guiding wheels for rolling on side faces of the monorail, and stabilizing wheels for rolling on the side faces of the monorail, and the stabilizing wheels are positioned in a lower portion from the guiding wheels, the monorail car is characterized in that the guiding wheels are comprised of two, the stabilizing wheels are comprised of two, respectively, and a number of the guiding wheels and a number of the stabilizing wheels is two in maximum.

[0010] According to the present, in a monorail car having a bogie for running on a monorail and a car body supported by the bogie, the bogie has running wheels for rolling on an upper face on the monorail, guiding wheels for rolling on side faces of the monorail, and stabilizing wheels for rolling on the side faces of the monorail, and the monorail car is characterized in that one end of a running direction of the bogie and the car body are connected.

[0011] According to the present invention, in a monorail car having a bogie for running on a monorail and a car body supported by the bogie; and the bogie has running wheels for rolling on an upper face on the monorail, guiding wheels for rolling on the upper face of the monorail, and running wheels for rolling on side faces of the monorail; and the monorail car is characterized in that the bogie is comprised of two side beams along to a running direction of the bogie and a cross bearer for connecting the two side beams, an axle of the running wheel is installed to a lower face of the side beam through a bearing seat, a speed reducer for driving the axle is installed to the side beam, an output shape of the speed reducer is provided to be drawn to an outer portion from the speed reducer, and the output shaft of the speed reducer and the axle are connected with a spline.

BRIEF DESCRIPTION OF THE DRAWINGS

[0012]FIG. 1 is a perspective view showing a bogie of a monorail car of one embodiment according to the present invention;

[0013]FIG. 2 is a front view showing the bogie of the monorail car shown in FIG. 1;

[0014]FIG. 3 is a plane view showing the bogie of the monorail car shown in FIG. 2;

[0015]FIG. 4 is a IV-IV cross-sectional view showing the bogie of the monorail car shown in FIG. 2;

[0016]FIG. 5 is a right side view showing the bogie of the monorail car shown in FIG. 2;

[0017]FIG. 6 is a VI-VI cross-sectional view showing the bogie of the monorail car shown in FIG. 2; and

[0018]FIG. 7 is a perspective view showing a bogie of a monorail car of another embodiment according to the present invention.

DESCRIPTION OF THE INVENTION

[0019] A monorail car of one embodiment according to the present invention will be explained referring to from FIG. 1 to FIG. 6. A bogie 40 supports two car bodies 20 and 20 through four air spring members 30. In other words, a relationship between the car body 20 and the bogie 40 is a junction type or an articulated type. Namely, in the junction type or the articulated type of the car body 20 and the bogie 40, the bogie 40 is arranged between one car body 20 and an adjacent another car body 20. In other words, the one car body 20 and the another adjacent car body 20 is joined or connected with the one bogie 40 which are arranged in a middle portion of the two car bodies 20 and 20. The air spring members 30 are installed on seats which are projected from four corner portions of a bogie frame 41 in a horizontal direction.

[0020] To one end of the bogie frame 41, a traction link 35 is provided, and the traction link 35 is connected to a lower portion junction member 21 of one side of the car body 20. The car bodies 20 and 20 are connected together by a coupling means or a coupler not shown in figure.

[0021] The bogie 40 is comprised of the bogie frame 41, four running wheels 45 for rolling on an upper face of a monorail 29, two guiding wheels 46 for rolling on both side faces of the monorail 29, and two stabilizing wheels 47 for rolling on both side faces of the monorail 29. The stabilizing wheels 47 are positioned in a lower portion of the guiding wheels 46. The stabilizing wheels 47, in similarly to the guiding wheels 46, guide the bogie 40 along to the monorail 29.

[0022] In a running direction of the bogie 40, at one end the two guiding wheels 46 are arranged, and at another end the two stabilizing wheels 47 are arranged. Wheels 48 are contacted to the upper face of the monorail 29 when the running wheel 45 goes blow out.

[0023] The bogie frame 41 is comprised of two side beams 50 along to the running direction, a cross bearer (a lateral beam) 51 for connecting a front end and a rear end of the two side beams 50, a cross bearer (a lateral beam) 52 for connecting a central portion of the two side beams 50, four installing legs 54 and 55 for projecting to a lower portion from both ends of the cross bearer 51 to install the two guiding wheels 46 and the two stabilizing wheels 47, and installing seats 57 for installing an electric motor 61 in an outer portion of the side beams 50, the installing seat 57 installs the electric motor 61.

[0024] The installing seat 57 and the installing seat 57 are connected through a coupling rod 52. The installing seats 57 have L shape when they are seen from a side portion and are installed on an outer side face of the side beams 50. The bogie frame 41 is straddled on the monorail 29. The spring members 30 are installed on an upper portion of the cross bearers 51 and 51.

[0025] A driving device 60 of the running wheels 45 will be explained. The driving device 60 has two systems, one of the two systems drives one end running wheel 45 in the running direction and another of the two systems drives another end running wheel 45 in the running direction. The driving device 60 is comprised of the electric motor 61 and a speed reducer (a reduction gear) 62.

[0026] The electric motor 61 is mounted on a horizontal seat of the installing seat 57. An axial direction of the electric motor 61 is directed in the running direction. The speed reducer 62 is installed on an outer side face of the side beams 50. A coupling device (a coupler) for connecting the electric motor 61 and the speed reducer 62 is penetrated a vertical member of the installing seat 57.

[0027] The electric motor 61 of one of the driving devices 60 is provided on one end side of the running direction and the electric motor 61 of another of the driving devices 60 is provided on another end side of the running direction. As to the speed reducer 62, similar construction with the electric motor 61 will be explained.

[0028] Both ends of the axle 70 of the running wheels 45 are fixed to a lower face of the side beam 50 through a bearing seat 71. The bearing seat 71 is fixed to a lower face of the side beam 50 from a lower portion through bolts. An output shaft 65 of the speed reducer 62 is inserted into an interior portion of the driving device 60. A tip end of the output shaft 65 and the axle 70 to are connected through a spline 66.

[0029] Except for a cover 67 of a shaft portion of the speed reducer 62, by removing the bolts for fixing a flange of an end portion of the output shaft 65 and the seat, the output shaft 65 can be drawn from the speed reducer 62 toward an outer portion. The axle 70 can be supported by both ends thereof and the axle 70 can be constituted strongly. The running wheels 45 are fixed to the axle 70 according the already known means.

[0030] With the above stated construction of the bogie of the monorail car, a manner for exchanging the running wheel 45 will be explained. This working is carried out at works. First of all, the car body 20 is removed. Next, the connection between the side beams 50 and a casing of the speed reducer 62 is removed. The above is carried out by removing the bolts from an inner side of the side beams 50.

[0031] Further, the bearing seat 71 is removed from a lower portion. Further, the cover 67 is removed and the fixing to the end portion of the output shaft 65 is removed, next the output shaft 65 is removed. After that, the bogie frame 40 is lifted up toward an upper portion. Since the running wheel 45 having the axle 70 and the bearing seat 71 is left, as a result it is possible to carry out the exchanging working about the running wheel 45.

[0032] Since the two car bodies 20 and 20 are supported by one bogie 40, the monorail car can run easily on a running passage having a small radius. Further, as a result the torsion of the air spring member 30 becomes small, accordingly it is possible to obtain the air spring member 30 having a long life.

[0033] Further, when the monorail car runs to direct in the side of the guiding wheel 46, the guiding wheel 46 guides the bogie 40 along to a monorail 29. When the monorail car runs to direct in the side of the stabilizing wheel 47, the stabilizing wheel 47 guides the bogie 40 along to the monorail 29.

[0034] The falling prevention of the bogie 40 is carried out mainly by the stabilizing wheel 47 similarly to that of the prior art. For this reason, a number of the guiding wheels 46 can be constituted by half, the bogie 40 of the monorail car can be constituted with a low cost.

[0035] In the prior art, the junction member 21 for connecting the bogie 40 and the car body 20 and the traction link 35 are arranged between the front and the rear cross bearers 51 and 51. However, according to the present invention, since the junction member 21 and the traction link 35 are arranged on one end of the bogie 40, an interval between the two axles 70 and 70 can be shortened, the monorail car can be passed through easily the passage having the small curvature. Further, a space in the vertical direction between the car body 20 and the bogie 40 can be formed small.

[0036] Another embodiment of a bogie of a monorail car shown in FIG. 7 will be explained. In the running direction, on the one end the guiding wheel 46 and the stabilizing wheel 47 are arranged, and on the another end the guiding wheel 46 and the stabilizing wheel 47 are arranged. In a rear portion of the guiding wheel 46 the stabilizing wheel 47 is arranged. In other words, a combination of the guiding wheel 46 and the stabilizing wheel 47 is arranged with mirror image construction in the front and the rear directions.

[0037] According to the present invention, to the stabilizing wheel since the function of the guiding wheel is held, a total number of the guiding wheels and the stabilizing wheels can be lessened, in particularly a number of the guiding wheels can be lessened, the bogie of the monorail car can be formed with the low cost. 

1. In a monorail car having a bogie for running on a monorail and a car body supported by said bogie; said bogie has running wheels for rolling on an upper face on said monorail, guiding wheels for rolling on side faces of said monorail, and stabilizing wheels for rolling on said side faces of said monorail; and said stabilizing wheels are positioned in a lower portion from said guiding wheels; the monorail car is characterized in that said guiding wheels are comprised of two, said stabilizing wheels are comprised of two, respectively, and a number of said guiding wheels and a number of said stabilizing wheels is two in maximum.
 2. A monorail car according to the claim 1 , is characterized that said two guiding wheels are arranged on one end of a running direction of said bogie; and said two stabilizing wheels are arranged on another end of said running direction of said bogie.
 3. A monorail car according to the claim 1 , is characterized that said two guiding wheels are arranged on a respective end of a running direction of said bogie; said two stabilizing wheels are arranged on said respective end of said running direction of said bogie; and in said running direction, at a rear portion of said respective guiding wheels said respective stabilizing wheels is arranged.
 4. In a monorail car having a bogie for running on a monorail and a car body supported by said bogie; said bogie has running wheels for rolling on an upper face on said monorail, guiding wheels for rolling on side faces of said monorail, and stabilizing wheels for rolling on said side faces of said monorail; and the monorail car is characterized in that one end of a running direction of said bogie and said car body are connected.
 5. In a monorail car having a bogie for running on a monorail and a car body supported by said bogie; and said bogie has running wheels for rolling on an upper face on said monorail, guiding wheels for rolling on said upper face of said monorail, and running wheels for rolling on side faces of said monorail; and the monorail car is characterized in that said bogie is comprised of two side beams along to a running direction of said bogie and a cross bearer for connecting said two side beams; an axle of said running wheel is installed to a lower face of said side beam through a bearing seat; a speed reducer for driving said axle is installed to said side beam; an output shape of said speed reducer is provided to be drawn to an outer portion from said speed reducer; and said output shaft of said speed reducer and said axle are connected with a spline. 